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WATER METERS

Typical water meters are mechanical flow meters. Commonly used meters are piston meters, also known as rotary piston or semi-positive displacement meters. The piston meter operates on the principle of a piston rotating within a chamber of known volume. For each rotation, a count for the amount of liquid is computed

Various prepaid water meter are available depending on the nominal bore (NB). NB (nominal bore) also refers to Nominal Pipe Size (NPS). The Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures also indicating the required wall thickness.

The European designation equivalent to NPS is DN (nominal diameter) in which pipe sizes are measured in millimeters. Based on the pipe size, the outside diameter (OD) and wall thickness can is obtained by use of reference tables

PREPAID WATER METERS ARE TYPICALLY AVAILABLE WITH THE FOLLOWING FEATURES:

  • Nominal Bore (mm): Available in: 15,20,25
  • Maximum flux (m3/h): Available in: 3, 5 or 7
  • Water Temperature: 0-40C
  • Working pressure: below 0.1MPa
  • Mechanical Counters (m3) upto 99
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